Door-key-securing device.



M. W. ROSEN SHINE. DOOR KEY SECURING DEVICE. APPLICATlON FILED uo'v.1o, 19-15.

1 1 9 l 1 Patented July 11,1916.

WITNESSES: INVENTOR ms ,mnms runs 00,. Pucm-ummwasmmamm n c MORRIS W. ROSENSHINE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALF TO HERBERT E. CLAYIBURGH, OF SAN FRANCISCO, CALIFORNIA.

DOOR-KEY-SECURING DEVICE.

Specification of Letters Patent.

Patented July 11, 1916.

To all whom it may concern:

Be it known that I, -MoRnrs W. Rosan- SHINE, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Door- Key-Securing Devices, of which the following is a specification.

My invention relates to a means for securing keys in a lock in such a manner as to prevent their being easily removed if left after the door has been locked.

It consists of a two-part key shank, one of which carries the wards to engage the interior of the lock, and the other is hinged thereto and adapted to drop at an angle and engage the sides of the key hole when the key is in the position corresponding with the locked or unlocked door.

The invention consists of the parts and the combination and construction of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure 1 shows a side elevation of a key embodying my invention, in its initial position within a lock, the lock being shown in section. Fig. 2 shows a similar view, with the keyturned to locking position within the lock, the dotted lines illustrating the key shank in retained position. Fig. 3 shows a front elevation of the parts illustrated in Fig. 2, with the key secured against removal from the look.

A is that portion of the shank ofthe key which is adapted to enter the lock B, and it carries the usual wards 2 by which the bolt of the lock may be moved.

Exterior to the lock the shank is jointed as shown at 3, the joint consisting of two parallel sides between which a tongue 4 of the extension shank 5 is fitted and turnable hinge-like. This joint is here shown as made at right angles with the wards of the key, so that the tongue portion may be turned up or down at right angles with the position of the key wards. The usual grip 6 serves by which to turn the key.

The operation would then be as follows: The two parts of the key shank being in Copies of this patent may be obtained for line, the key is introduced into the key hole 7 and may be turned to lock or unlock the door, in which condition the wards will stand horizontally in the look and the jointed portion 5 will stand vertical. This joint is sufiiciently loose so that as soon as the outside turning portion of the key shank is released it will drop down from its alinement with the ward-carrying portion, and will then lie between the parallel sides of the key hole below the round portion, and when in this position the angle portions be-. tween that portion of the shank in the lock and the portion which has thus dropped down, will cause the latter to contact with the sides of thekey hole and prevent any efiort to turn it, while in this position. Keys may thus remain indefinitely in the look without being jarred out or lost, and when, if left in the door after the bolt has been shot, it will not be possible to push the key out or to remove it from the exterior.

Having thus' described my invention, what I claim and desire to secure by Letters Patent is 1. A look having an inner ward contain ing portion, an escutcheon member having a key hole therein, and separated by an open space from the first-narned portion, in combination with a key having a hinge joint between the lock and the keyhole, whereby the outer portion of the key may be turned to an angle and lie in the lower part of the keyhole slot.

2. A look having an inner key receiving portion and a keyhole plate with an interspace between the two, a key having a hinge in its shank between the lock and keyhole to allow the outer portions of the key shank to drop to the bottom of the keyhole in interlocking engagement.

In testimony whereof I have hereuntoset my hand in the presence of two subscribing witnesses.

MORRIS W. ROSENSHINE.

Witnesses:

JOHN H. HERRING, W. W. HEALEY.

five cents each, byaddressing the Commissioner of Patents,

Washington, D. G. 

